Security system no remote

These are easy systems. Lock down the truck. Open the door with the key. Doesn't work on the drivers side, lock it, unlock the passenger side, then reach in to unlock the drivers side. Still no start? look under the driver side for an after market security system. Remove it and repair wires as you go. Still no start after this, Have the codes read. Could be both door latches are bad or the BCM?security.